Remove unnecessary #undefs

-Remove #undefs from CurieSoftwareSerial Library
-Because it was braking some functionality such abs()

Author: bigdinotech

libraries/CurieSoftwareSerial/src/SoftwareSerial.h

@@ -96,13 +96,4 @@ class SoftwareSerial : public Stream
 
 };
 
-// Arduino 0012 workaround
-#undef int
-#undef char
-#undef long
-#undef byte
-#undef float
-#undef abs
-#undef round
-
 #endif